Interfacing ADRF6620 with Ardunio, Rpi or Odroid via Spi

I have a project about indoor positioning. I have ADRF6620 mixer and I design PCB and print it. Now I want to interface mixer with Ardunio, Raspberry Pi or ODROID. ADRF6620 has bi-directional 3-wire SPI. I have made some search on google and Rpi bi-directional mode not available. For Ardunio I see just example. Is it possible to interface ADRF6620 with Ardunio, Odroid or Rpi? Also I have some question about ADC. I have cirrus logic WM8224 ADC which use for Video and has 3-Channel for RGB. Can I interface mixer output with WM8224 and use single channel? You can see ADC datasheet on attachment.

The SPI specifications are defined within the datasheet for both the controller and the ADRF6620. You have to refer to the datasheets of the microcontrollers to check the 3-wire SPI mode. I would advise to check for the timing constraints and the compatible logic levels. For interfacing with the ADC, I would advise to check for the input impedance of the ADC and full scale input level. I hope this answers your questions.